Section
80, act June 3, 1916, ch. 134, § 120,39 Stat. 213, 214, related to procurement of war material and mobilization of industries. See sections
2538 to
2540 of Title
10.

Section
81, act May 14, 1928, ch. 544, 45 Stat. 509, authorized Secretary of War to secure assistance, whenever practicable, of Geological Survey, Coast and Geodetic Survey, or other mapping agencies of the Government in execution of military surveys and maps. Provisions similar to former section
81 were contained in the following appropriation acts: